Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         [crown] Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           Clade neomura Cavalier-Smith, 1987
             Domain Eukaryota Chatton, 1925 - eukaryotes
               Clade discaria Cavalier-Smith, 2021
                 Clade natates Cavalier-Smith, 2021
                   Clade photaria Cavalier-Smith, 2021
                     Clade eucorta Cavalier-Smith, 2021
                       Superkingdom Corticata Lankester, 1878 - corticates
                         Kingdom Chromista Caval.-Sm. (1981) - chromists
                           Subkingdom Hacrobia Okamoto, Chantangsi, Horák, Leander & Keeling, 2009
                             Phylum Cryptista Cavalier-Smith, 1986
                               Subphylum Rollomonadia Cavalier-Smith, 2013
                                 Superclass Cryptomonada Cavalier-Smith, 2004
                                   Class Cryptophyceaeᵀ F.E. Fritsch (1927)
                                     Order Cryptomonadales Pascher (1913)
                                       Family Hemiselmidaceae Butcher (1967)
                                         Genus Hemiselmisᵀ M. Parke (1949)
                                           Hemiselmis amylosa B.L. Clay & P. Kugrens, 1999a
                                           Hemiselmis brunnescens R.W. Butcher (1967)
                                           Hemiselmis simplex R.W. Butcher (1967)
                                           Hemiselmis virescens M.R. Droop (1955)
                                           1 Subgenus Hemiselmis subg. Hemiselmisᵀ (M. Parke, 1949) Butcher (1967)
                                           2 Subgenus Hemiselmis subg. Plagiomonas Butcher (1967)